Rotary wing aircraft



FIG. 1 is a top view of a rotary wing aircraft;

FIG. 2 is a bottom view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG, 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof; and,

FIG. 7 is a perspective view thereof. 

The ornamental design for a rotary wing aircraft, as shown and described. 